| Verfasser | Häufigkeit |
| Mertens, Dieter |
97 |
| Mertens, Dieter 1941- |
68 |
| Mertens, Dieter 1940-2014 |
36 |
| Mertens, Dieter 1931-1989 |
23 |
| Verweyen, Theodor 1937- |
8 |
| Zincgref, Julius Wilhelm 1591-1635 |
8 |
| Ulich, Dieter 1940-2019 |
5 |
| Mertens, Wolfgang 1946- |
4 |
| Speck, Dieter 1958- |
3 |
| Studt, Birgit 1960- |
3 |
| Zotz, Thomas 1944- |
3 |
| Mertens, Lothar |
2 |
| Reyher, Lutz |
2 |
| Schmid, Karl 1923-1993 |
2 |
| Voigt, Dieter |
2 |
| Beste, Heinz-Jürgen |
1 |
| Beste, Heinz-Jürgen ca. 20./21. Jh |
1 |
| Fonfara, Dirk |
1 |
| Graewe, Wolf-Dieter 1929-2008 |
1 |
| Greco, Emanuele 1945- |
1 |